Slab Leak Detection in Williston, ND
For reliable slab leak detection in Williston, ND, trust HPN Plumbing. We accurately locate leaks to protect your home's foundation and plumbing system.
- Reroute and Repair Options
- Pinpoint Acoustic Detection
- Accurate Leak Detection
- Expert Plumbers
Find the Leak Under Your Slab Before It Damages Your Home in Williston, ND.
Don't let a hidden leak damage your home's foundation, contact HPN Plumbing for immediate service.
Reliable Slab Leak Detection Services in Williston, ND
HPN Plumbing detects leaks in water lines buried in or under concrete slab foundations. We isolate hot and cold lines with pressure tests, trace pipe routes with line locators and hear the leak through the concrete with ground microphones.
Our expertise includes:
- Thermal imaging cameras to spot temperature changes from leaks.
- Electronic leak detection for hidden pipe breaches.
- Thermal imaging to trace hot water leaks through flooring

Additional Plumbing Maintenance Services in Williston, ND
Our maintenance and specialty plumbing services in Williston, ND protect your home year-round and extend the life of every system.

Customers
Why Choose HPN Plumbing for Slab Leak Detection in Williston, ND?
Ignoring a slab leak can lead to costly foundation repairs and increased water bills. We provide thorough detection to prevent further damage to your home.
- Insurance Ready, We document findings with photos and readings for your insurance claim.
- Water Bills, Even a small slab leak can waste hundreds of gallons of water a day, causing your water bills to jump dramatically.
- Accurate Locating, We confirm the leak with several methods before choosing a spot on the floor.
Citywide Coverage
No matter where you are in Williston, ND, our expert plumbers are ready to respond quickly to your slab leak concerns. We understand the urgency and provide comprehensive coverage to protect homes across the entire area.
Experienced Team
Each technician at HPN Plumbing undergoes continuous training on current leak detection technologies and repair methods. This expertise lets us accurately diagnose and recommend the best course of action for your slab leak in Williston, ND.
Safety-First Approach
All our detection methods are non-invasive and performed with the greatest care for your property. We maintain a safe work environment and compliance with all relevant building and plumbing standards.
Trusted Certified Williston Plumbing Services Professionals
At HPN Plumbing, we take pride in providing licensed, certified plumbing services throughout Williston, ND. Backed by leading industry credentials, our experienced plumbers combine technical skill with genuine customer care. Whether it is repair, installation, or maintenance, we follow strict safety and quality standards to deliver long-lasting results you can trust.
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PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationAccurate Slab Leak Detection Services in Williston, ND
Acoustic Slab Leak Detection in Williston
Our technicians use highly sensitive acoustic listening devices to pinpoint the exact location of a leak under your slab. This method involves listening for the faint sound of escaping water, even through concrete. It's particularly effective for pressurized water lines, allowing us to find leaks without unnecessary excavation and minimizing disruption to your Williston home.

Pressure Testing & Isolation in Williston
When a leak is suspected, we can perform pressure tests on individual water lines. By isolating sections of your plumbing system and monitoring pressure gauges, we can confirm the presence of a leak and often determine which specific line is compromised. This step-by-step approach is crucial for homes with complex plumbing layouts, giving you an accurate diagnosis before any excavation in Williston, ND.
Cost-Effective Slab Leak Detection in Williston
Investing in professional slab leak detection with HPN Plumbing is a budget-friendly solution compared to the long-term damage of an undetected leak. Our accurate diagnosis prevents unnecessary excavation and helps you address the problem before it grows into expensive foundation repairs or mold remediation, protecting your investment in your Williston property.
Video Pipe Inspection for Sewer Leaks in Williston, ND
Sewer line issues under a slab can also mimic slab leak symptoms. We use high-resolution video cameras to inspect the interior of your drain lines, identifying cracks, blockages or separations. This is vital if the issue isn't a pressurized water line, helping us determine if a sewer line repair is needed instead for your Williston home.
Non-Invasive Leak Detection in Williston, ND
Our primary goal is to locate your slab leak with the least amount of disruption possible. We prioritize non-invasive techniques like acoustic and thermal imaging before considering any intrusive methods. This approach saves your home in Williston, ND from unnecessary damage, preserves your landscaping and lowers the overall cost and time of the repair process.
Repiping After Multiple Slab Leaks in Williston, ND
If your home has had two or more slab leaks, the remaining pipe is likely corroded too. Repiping replaces all supply lines with new PEX or copper run through the walls and attic. It is a bigger project, but it ends the cycle of recurring slab leaks. We can usually complete a full repipe in two to four days.
Electronic Acoustic Leak Detection in Williston
Our team uses electronic listening devices to pinpoint the precise location of a slab leak. These highly sensitive microphones can detect the faint sound of water escaping from a pressurized pipe under your foundation. This non-invasive method helps us avoid unnecessary concrete breaking, saving you time and money on repairs. It's particularly effective for copper and PEX lines commonly found in Williston homes.

Water and Sewer Line Slab Leaks in Williston, ND
Slab leaks can affect both freshwater supply lines and sewer drain pipes. Our detection services are equipped to identify both types of leaks, which present different challenges. Sewer line leaks often involve foul odors and slow drainage, while water line leaks can show up as wet spots or high water bills in your Williston, ND home. We have separate methods for each.
Slab Leak Detection Near Me in Williston, ND
When you suspect a slab leak, a fast local response limits the damage to your floors and foundation. Our technicians are based near Williston and can usually schedule testing within a day. We bring all detection equipment on the initial visit.
Don't let a hidden leak damage your home's foundation. For professional slab leak detection near me, contact HPN Plumbing today. We offer fast, efficient service to residents and businesses throughout Williston, ND, so your plumbing issues are resolved quickly and effectively.
HPN Plumbing at a Glance
- Fully licensed plumbing team covering Williston, ND
- Same-day appointments and 24/7 emergency response
- Clear written estimates, no hidden fees
- 4.9-star rated by 408+ North Dakota customers
Williston Map
Williston Information
- Population
- 27,706
- Area codes
- Local
- Service area
- Williston and communities within 40 miles
- Nearby
- Watford City, Dickinson, Minot AFB, Minot
Many homes in Williston, ND are built on concrete slabs with water lines running underneath, which makes under-slab pipe leaks one of the most frequent and costly plumbing problems in the area. Older homes may still have galvanized supply lines or cast iron drains, which can corrode and restrict flow with age.
Expert Services
Trust our professionals for reliable HPN Plumbing solutions in Williston, ND.
Our Specialized Plumbing Services in Williston, ND
At HPN Plumbing, we provide a complete range of plumbing services across Williston, ND. From leak detection to full system installations, our team ensures fast, precise, and affordable service for both residential and commercial properties. Explore our core services below:
How Our Slab Leak Detection Process Works in Williston, ND
Our slab leak detection process is built to be thorough and minimally invasive, giving you clear answers without unnecessary disruption to your Williston, ND home.
Request a Quote
Call (701) 403-1348 and describe what you have noticed, such as warm floors or a running meter. We schedule a visit and go over the detection fee.
Isolate and Locate
We pressure test hot and cold lines to confirm which side is leaking. Then we trace the pipe and listen through the slab to locate the leak.
Repair Options
We mark the leak and explain direct access, reroute and repipe options with prices. Once you choose, we schedule the repair and pressure test the finished work.
Frequently Asked Questions About Slab Leak Detection in Williston
The cost of slab leak detection in Williston, ND typically ranges from $250 to $700, depending on the complexity of the leak and the time required for detection. This cost covers the specialized equipment and expertise needed to accurately locate the leak, which is crucial before any repair work can begin.
Yes. Water leaking under the slab can cause expansive soil to swell or wash away supporting soil. Over time this can lead to cracks and sinking. Fixing leaks quickly protects the foundation.
Warm spots on the floor, the sound of running water with fixtures off, a moving water meter and an unexplained jump in your water bill are common signs. Cracked tile, damp carpet and mildew odors also suggest a slab leak. Call us if you notice any of these.
Common signs of a slab leak in North Dakota homes include sudden increases in water bills, warm spots on your floor, the sound of running water when no fixtures are in use, damp or mildewy smells and visible cracks in your foundation or walls. Pooling water outside your home near the foundation can also be a strong indicator.
Heavy, expansive clay soils are common in North Dakota, and they swell and shrink with moisture and frost, stressing foundations and buried pipe. Hard water can also corrode copper pipes from the inside. Pipes can rub against concrete or gravel as they expand with hot water, and over time these factors cause pinholes and cracks.
Common signs of a slab leak include surprisingly high water bills, warm spots on your floor, the sound of running water when no fixtures are in use, visible cracks in the foundation, damp or wet spots on carpets or flooring and a sudden drop in water pressure. Musty odors can also indicate moisture buildup.
We stand by the accuracy of our slab leak detection services. While detection itself is a diagnostic service, we make sure our findings are accurate. Any subsequent repairs performed by HPN Plumbing come with our standard labor and parts warranties, which will be clearly outlined for you.
Yes, HPN Plumbing stands behind our work. We offer a warranty on our slab leak detection services, guaranteeing the accuracy of our findings. Any subsequent repair work performed by us also comes with a full warranty on parts and labor, providing you with peace of mind.
What People Are Saying About Our Plumbing Experts?

James P.
Our commercial plumbing system had a leak under the sink, and HPN Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · Williston, ND
Patricia H.
We had a slab leak that two other companies could not find. HPN Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Bismarck, ND
Laura S.
I scheduled a water heater replacement, and the team made the process smooth and affordable. The new unit works perfectly, and they cleaned up after completing the job.
Water Heater Replacement · Mandan, ND
Sofia M.
Two new toilets installed in one visit, no mess left behind, and the tech even adjusted a faucet he noticed was dripping. Fair pricing and really friendly.
Toilet Installation · Watford City, ND
Robert G.
The trenchless sewer replacement saved our front yard. They walked us through the camera inspection footage first so we knew exactly what we were paying for.
Sewer Line Replacement · Watford City, ND
Emily R.
I called HPN Plumbing for plumbing repair, and the technician was fast, polite, and thorough. They explained the problem clearly and fixed it the same day. I will definitely hire them again. Highly recommended!
Plumbing Repair · Watford City, ND













